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Finding the Fourth Proportional to 599.55, 826.70 and 488.68

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Solution

The fourth proportional to 599.55, 826.70 and 488.68 is: 673.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    599.55 : 826.70 = 488.68 : x
  2. Step 2: Convert to fraction form
    599.55/826.70 = 488.68/x
  3. Step 3: Cross multiply
    599.55x = 826.70 × 488.68
  4. Step 4: Simplify right side
    599.55x = 403,990.53
  5. Step 5: Solve for x
    x = 403,990.53/599.55
  6. Step 6: Final answer
    x = 673.82

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.